51286801 has 2 divisors, whose sum is σ = 51286802. Its totient is φ = 51286800.

The previous prime is 51286799. The next prime is 51286811. The reversal of 51286801 is 10868215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41990400 + 9296401 = 6480^2 + 3049^2 .

It is a cyclic number.

It is not a de Polignac number, because 51286801 - 2¹ = 51286799 is a prime.

Together with 51286799, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51286811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25643400 + 25643401.

It is an arithmetic number, because the mean of its divisors is an integer number (25643401).

Almost surely, 2^51286801 is an apocalyptic number.

It is an amenable number.

51286801 is a deficient number, since it is larger than the sum of its proper divisors (1).

51286801 is an equidigital number, since it uses as much as digits as its factorization.

51286801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 51286801 is about 7161.4803637237. The cubic root of 51286801 is about 371.5368291299.

The spelling of 51286801 in words is "fifty-one million, two hundred eighty-six thousand, eight hundred one".